Agriculture Reference
In-Depth Information
B
8 Steps
w/ 6” rise
TW 108
TW 106
G
E
F
D
TW 105
105
3'
C
A
A
101
Figure 10.10
A catch basin was installed at the lowest
elevation in this grass area, with spot elevation A for rim
elevation of the catch basin
Figure 10.9
An example of how wall and step elevations
are coordinated through the use of spot elevations for pav-
ing, steps, and walls. Grand Park, Los Angeles, Civic Center.
slope, so a spot elevation is given. Point C is a spot elevation, and it is
also the rim elevation at the top of a catch basin where surface water
is collected and drops to an underground pipe that is connected to the
storm water infrastructure system.
6. Finish grade elevations in the landscape:
Finish grade elevations
or spot elevations are required to communicate critical elevations
such as earthen mounds or embankments, finish grade of land-
scape areas at corners and entrances of
buildings or other structures, and fin-
ish grades of hard surfaces for complex
urban plaza areas.
Figure 10.12 is an annotated photo-
graphic diagram showing typical loca-
tions where spot elevations are needed in
a grading plan for a plaza with fountain
and other hardscape features. In addi-
tion to spot elevation, a grading plan will
include slope indications represented in
Figure 10.12 by the arrows. The arrows
A
B
C
Figure 10.11
Swale in a campus lawn area terminating at
area catch basin
